diff options
| author | Anup Patel <anup.patel@wdc.com> | 2020-03-15 11:39:25 +0530 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2020-03-19 09:30:01 +0530 |
| commit | c51f02cf143b081c2a81717393a0e6cef2ce2521 (patch) | |
| tree | eeff8cd451d20bfa543df626e1713a59803e6fb4 /lib/utils/fdt | |
| parent | 75eec9dd3f04febd7df8e5ee3fb90c236e50ded3 (diff) | |
include: sbi_platform: Introduce HART index to HART id table
A platform can have discontinuous and/or sparse HART ids so we
cannot always assume a set of HARTs with continuous HART ids.
This patch adds support for discontinuous and sparse HART ids by
introducing HART index to HART id table. This table has platform
hart_count entries and it maps HART index to HART id.
The HART index to HART id table has only two restrictions:
1. HART index < sbi_platform hart_count
2. HART id < SBI_HARTMASK_MAX_BITS
Example1:
Let's say we have a platform with 2 HART ids 11 and 22, for such a
a platform:
hart_count = 2
hart_index2id[0] = 11
hart_index2id[1] = 22
Example2:
Let's say we have a platform with 5 HARTs ids 0, 1, 2, 3, and 4
but out of these HART with id 0 is not usable so for such a platform:
hart_count = 5
hart_index2id[0] = -1U
hart_index2id[1] = 1
hart_index2id[2] = 2
hart_index2id[3] = 3
hart_index2id[4] = 4
OR
hart_count = 4
hart_index2id[0] = 1
hart_index2id[1] = 2
hart_index2id[2] = 3
hart_index2id[3] = 4
With HART index to HART id table in place, the hart_disabled()
callback is now redundant so we remove it as well.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Diffstat (limited to 'lib/utils/fdt')
| -rw-r--r-- | lib/utils/fdt/fdt_helper.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/utils/fdt/fdt_helper.c b/lib/utils/fdt/fdt_helper.c index 47cd1d3..2ea52ca 100644 --- a/lib/utils/fdt/fdt_helper.c +++ b/lib/utils/fdt/fdt_helper.c @@ -30,7 +30,7 @@ void fdt_cpu_fixup(void *fdt) sbi_sprintf(cpu_node, "/cpus/cpu@%d", i); cpu_offset = fdt_path_offset(fdt, cpu_node); - if (sbi_platform_hart_disabled(plat, i)) + if (sbi_platform_hart_invalid(plat, i)) fdt_setprop_string(fdt, cpu_offset, "status", "disabled"); |